Question

The vapour pressure of a solvent decreased by
10mm of mercury when a non-volatile solute was
added to the solvent. The mole fraction of the
solute in the solution is 0.2. What should be the
mole fraction of the solvent if the decrease in the
vapour pressure is to be 20mm of mercury?
(a) 0.8 (b) 0.6
(c) 0.4 (d) 0.2

Answer 1

Answer:

The vapour pressure of a solvent decreased by

10mm of mercury when a non-volatile solute was

added to the solvent. The mole fraction of the

solute in the solution is 0.2. What should be the

mole fraction of the solvent if the decrease in the

vapour pressure is to be 20mm of mercury?

(a) 0.8

(b) 0.6

(c) 0.4

(d) 0.2

Answer 2

Answer :- Option C) ....